diff --git a/ChangeLog b/ChangeLog
index 4dc018292..ee5b9253a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2008-09-18  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>
+
+	* src/cff/cffobjs.c (cff_face_init): Use TTAG_OTTO defined
+	in ttags.h instead of numerical value 0x4F54544FL.
+
 2008-09-16  Werner Lemberg  <wl@gnu.org>
 
 	* src/cff/cffgload.h, src/cff/cffgload.c
diff --git a/src/cff/cffobjs.c b/src/cff/cffobjs.c
index 21ef2459d..c6b603034 100644
--- a/src/cff/cffobjs.c
+++ b/src/cff/cffobjs.c
@@ -437,7 +437,7 @@
     error = sfnt->init_face( stream, face, face_index, num_params, params );
     if ( !error )
     {
-      if ( face->format_tag != 0x4F54544FL )  /* `OTTO'; OpenType/CFF font */
+      if ( face->format_tag != TTAG_OTTO )  /* `OTTO'; OpenType/CFF font */
       {
         FT_TRACE2(( "[not a valid OpenType/CFF font]\n" ));
         goto Bad_Format;